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Academia Mexicana de Neurología, A.C.

2018, Number 4

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Rev Mex Neuroci 2018; 19 (4)

Periodic electroencephalographic (EEG) patterns: a controversial and infrequent finding

Aguilar-Fabré L, Rodríguez-Valdés RF

Language: Spanish
References: 67
Page: 71-82
PDF size: 825.52 Kb.


ABSTRACT

Periodic electroencephalographic patterns are discharges usually epileptiform in appearance, which occur at regular intervals associated with acute brain injury such as cerebral vascular disease and encephalitis. They are commonly classified as periodic lateralized epileptiform discharges, periodic lateralized epileptiform discharges bilateral independent, generalized epileptiform discharges, triphasic waves and stimulus-induced rhythmic, periodic or ictal discharges. The aim of this study is to make a review of the periodic EEG patterns, emphasizing the importance of their recognition and clinical significance. The clinical significance of the periodic EEG patterns is uncertain, it is related to a variety of etiologies and suggest that these patterns are unequivocally epileptogenic in some cases and these patterns associated with poor prognosis. Their recognition and classification are important to establish an accurate correlation between clinical, neurological, laboratorial and neuroimaging data with the EEG results, which allow making adequate therapeutic benefit of critical patient behavior.


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